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Patch #34160

closed

Replace Hash#merge! with Hash#[]=

Added by Go MAEDA about 4 years ago. Updated about 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Go MAEDA
Category:
Performance
Target version:
4.2.0
Start date:
Due date:
% Done:

0%

Estimated time:

Description

Hash#[]= is faster than Hash#merge!.

https://docs.rubocop.org/rubocop-performance/cops_performance.html#performanceredundantmerge
https://github.com/JuanitoFatas/fast-ruby#hashmerge-vs-hash-code

Replacement can be done with RuboCop:

bundle exec rubocop --only Performance/RedundantMerge -a
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